POST UTME CALEB UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a eukaryotic cell, the process of photosynthesis occurs in the
A. mitochondria
B. chloroplast
C. nucleus
D. cytoplasm
Question 2
A species of fish has a body temperature of 25°C. If the water temperature is 10°C, what is the rate of heat transfer from the fish to the water?
A. 10 W
B. 20 W
C. 30 W
D. 40 W
Question 3
A researcher is studying the effects of antibiotics on bacterial growth. Which of the following is a characteristic of antibiotic resis\tance?
A. Increased bacterial growth rate
B. Reduced bacterial growth rate
C. Bacterial cells become more susceptible to antibiotics
D. Bacterial cells develop mechanisms to evade antibiotic action
Question 4
The \endocrine system is responsible for producing and secreting hormones. Which of the following is a type of hormone that is produced by the pancreas?
A. Insulin.
B. Glucagon.
C. Adrenaline.
D. Thyroxine.
Question 5
A plant cell is placed in a solution with a high concentration of sucrose. What will happen to the cell?
A. The cell will shrink due to water loss
B. The cell will swell due to water uptake
C. The cell will remain unchanged
D. The cell will burst due to osmotic pressure
Question 6
A diagram of a human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 7
The concept of natural selection was first proposed by Charles Darwin in his book 'On the Origin of Species'. Which of the following statements accurately describes the process of natural selection?
A. The process by which organisms adapt to their environment through genetic drift
B. The process by which organisms with favorable traits are more likely to survive and reproduce
C. The process by which organisms with unfavorable traits are more likely to survive and reproduce
D. The process by which organisms adapt to their environment through mutation
Question 8
In the context of eco\logical succession, primary succession occurs in areas where the substrate is newly exposed, such as after a volcanic eruption. Which of the following stages of primary succession is characterized by the establishment of a pioneer community?
A. Pioneer community
B. Succession community
C. Climax community
D. Intermediate community
Question 9
A species of bird has a wing span of 1.5 meters. If the bird flies at a speed of 50 km/h, what is its acceleration?
A. 0.05 m/s^2
B. 0.5 m/s^2
C. 5 m/s^2
D. 50 m/s^2
Question 10
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.16
B. 0.36
C. 0.64
D. 0.84
Question 11
A diagram of the human circulatory system is shown below. Which of the following structures is responsible for the regulation of blood pressure?
A. A
B. B
C. C
D. D
Question 12
The classification of living things into kingdoms is based on their
A. morpho\logy
B. physio\logy
C. biochemistry
D. cellular structure
Question 13
The process of meiosis results in the production of gametes, which are haploid cells. Which of the following is a characteristic of meiosis?
A. It results in the production of diploid cells
B. It results in the production of haploid cells
C. It involves the replication of DNA
D. It involves the separation of homo\logous chromosomes
Question 14
A study on the growth of a plant found that the rate of growth is directly proportional to the amount of light it receives. If the plant receives 100 units of light, it grows at a rate of 2 cm/h. What is the rate of growth when it receives 200 units of light?
A. 1
B. 2
C. 4
D. 6
Question 15
The excretory system is responsible for removing waste products from the body. Which of the following is a type of waste product that is removed by the kidneys?
A. Urea.
B. Creatinine.
C. Sodium.
D. Potassium.

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